Nouns denoting natural phenomena

cold weather
a period of unusually cold weather
 
continental drift
the gradual movement and formation of continents (as described by plate tectonics)
 
fluorescence
light emitted during absorption of radiation of some other (invisible) wavelength
 
dust devil
a miniature whirlwind strong enough to whip dust and leaves and litter into the air
 
microwave
a short electromagnetic wave (longer than infrared but shorter than radio waves); used for radar and microwave ovens and for transmitting telephone, facsimile, video and data
 
emf
the rate at which energy is drawn from a source that produces a flow of electricity in a circuit; expressed in volts
 
strain
(physics) deformation of a physical body under the action of applied forces
 
windage
the retarding force of air friction on a moving object
 
fume
a cloud of fine particles suspended in a gas
 
bloom
a powdery deposit on a surface
 
occlusion
(meteorology) a composite front when colder air surrounds a mass of warm air and forces it aloft
 
work
(physics) a manifestation of energy; the transfer of energy from one physical system to another expressed as the product of a force and the distance through which it moves a body in the direction of that force
 
rocket propulsion
reaction propulsion using stored oxygen for combustion; used where there is insufficient atmospheric oxygen
 
firestorm
a storm in which violent winds are drawn into the column of hot air rising over a severely bombed area
 
friction
the resistance encountered when one body is moved in contact with another
 
spillover
(economics) any indirect effect of public expenditure
 
magnetic resonance
resonance of electrons or atoms or molecules or nuclei to radiation frequencies as a result of space quantization in a magnetic field
 
placebo effect
any effect that seems to be a consequence of administering a placebo; the change is usually beneficial and is assumed result from the person's faith in the treatment or preconceptions about what the experimental drug was supposed to do; pharmacologists were the first to talk about placebo effects but now the idea has been generalized to many situations having nothing to do with drugs
 
paramagnetism
materials like aluminum or platinum become magnetized in a magnetic field but it disappears when the field is removed
 
brush discharge
discharge between electrodes creating visible streamers of ionized particles
 
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